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五角形の外角の和

Author:松浦　孝昭

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円の伸開線
standingwave-reflection
sine-wave
斜めドップラー
二次曲線と離心率

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三角形のいろいろな心
Copy of 円に内接する四角形
余弦定理の発見２
sine のグラフ
比例の利用　動く点P

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Symmetry
Constructions
Intersection
Step Functions
Quadratic Functions

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